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Surface Coating Material, Cutting Tool In Which Said Material Is Used, And Working Machine In Which Said Material Is Used

Abstract: The present invention provides a surface- coating material capable of exhibiting high peeling resistance and high chipping resistance. A surface- coating material (10) is provided with a base material (11), a bottom layer (12) , and a top layer (13). The base material (11) comprises high speed tool steel or cemented carbide. The bottom layer (12) is provided on the surface of the base material (11) and comprises at least one nitride of titanium , aluminum, chromium , and zirconium. The top layer (13) is provided on the surface of the bottom layer (12) and is formed by alternatingly laminating an A layer and/or a B layer. The A layer comprises a nitride of aluminum , chromium , and silicon. The B layer comprises a nitride of aluminum ,chromium , and yttrium.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
30 April 2015
Publication Number
47/2015
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2022-11-11
Renewal Date

Applicants

MITSUBISHI HEAVY INDUSTRIES ,LTD.
16- 5, Konan 2- chome, Minato -ku ,Tokyo 1088215

Inventors

1. MISAKI, Masanobu
c/o MITSUBISHI HEAVY INDUSTRIES, LTD., 16- 5 ,Konan 2 -chome, Minato -ku ,Tokyo 1088215
2. KIKUCHI ,Taiji
c/o MITSUBISHI HEAVY INDUSTRIES, LTD., 16- 5, Konan 2 -chome ,Minato- ku ,Tokyo 1088215

Specification

Technical Field [0001] The present invention relates to a surface-coating material, a cutting tool in which the material is used, and a working machine in which the material is used. Background Art [0002] As a cutting tool with which cutting is performed in a working machine, cutting tools obtained by forming a high-hardness coating film on a surface of a base material using physical vapor deposition represented by ion plating have been developed. Among these cutting tools, the practical use of a cutting tool obtained by forming a layer formed of a metal nitride such as TiN or TiAlN on a surface of a base material has progressed the most. Citation List Patent Literature [0003] 2 [PTL 1] Japanese Unexamined Patent Application Publication No. 10-25566 [PTL 2] Japanese Unexamined Patent Application Publication No. 2005-330539 [PTL 3] Japanese Unexamined Patent Application Publication No. 2009-285758 [PTL 4] Japanese Patent No. 3963354 Summary of Invention Technical Problem [0004] However, when the above-described cutting tool is used in a high-temperature range of higher than 800°C, oxidation of the metal nitride is started, and thus there is a problem in that the cutting tool cannot be used for a long period of time. Therefore, as a cutting tool which can be used in a high-temperature range, cutting tools obtained by providing a surface-coating material such as an AlCrN coating film or an (AlCrM)N coating film (M represents at least one element or two or more elements selected from elements other than Cr in Groups 4a, 5a, and 6a of the periodic table, B, Si, and Y) on a surface of a base material are considered (for example, refer to the above-described PTLs 1 to 4). [0005] However, the cutting tools obtained by providing the 3 surface-coating material on the surface of the base material have a problem in the adhesion of the surfacecoating material. In addition, under a cutting condition of high-speed feeding where a high load is locally applied to a cutting blade portion along with a large amount of heat generation, peeling or chipping (small cracking) occurs in the surface-coating material in the early stage. Therefore, there is a problem in that the lifetime ends within a relatively short period of time, and superior wear resistance in a high-temperature range which is a intrinsic characteristic of the surface-coating material cannot be sufficiently exhibited. [0006] The above-described problems may occur in the same way as described above not only in the above-described cutting tools used in a working machine but also in components and dies to which a surface-coating material requiring superior wear resistance in a high-temperature range is applied. [0007] Accordingly, the invention has been made in order to solve the above-described problems, and an object thereof is to provide a surface-coating material capable of exhibiting high peeling resistance and high chipping resistance, a cutting tool in which the material is used, 4 and a working machine in which the material is used. Solution to Problem [0008] According to a first aspect of the present invention for solving the above-described problems, there is provided a surface-coating material including a top layer on a surface of the surface-coating material, in which in the top layer, one or more A layers, which contain a nitride of aluminum, chromium, and silicon and one or more B layers, which contain a nitride of aluminum, chromium, and yttrium, are alternately laminated, and the top layer is provided on a surface of a metal nitride. [0009] According to a second aspect of the present invention for solving the above-described problems, in the surfacecoating material according to the first aspect, the A layer satisfies 0.15 Work material: SCM 415 Cutting method: interrupted cutting Cutting speed: 2 00 m/min 18 Feed rate: 1.2 mm/blade Depth of cut: 1 mm Cutting fluid: air blow Length of cut: 1 m [0045] 19 [0048] As shown in Tables 2 and 3, it was verified that the peeling resistance and chipping resistance of the base material 11 or the top layer 13 can be improved by using the surface-coating material obtained by providing the top layer on the surface of the metal nitride, in which the top layer is formed by alternately laminating one or more A layers containing a nitride (N) of aluminum (Al), chromium (Cr), and silicon (Si) and one or more B layers containing a nitride (N) of aluminum (Al) , chromium (Cr) , and yttrium (Y) . As a result, superior wear resistance in a hightemperature range which is an intrinsic characteristic of the top layer 13 can be sufficiently exhibited, the top layer 13 being a composite nitride containing aluminum (Al) , chromium (Cr) , silicon (Si) , and yttrium (Y) as major components. [0049] [Verification Test 2] In this test, test samples, comparative samples, and reference samples were prepared by providing surfacecoating materials shown in Table 4 below on a surface of a formed fly tool (cutting tool) including high-speed tool steel SKH 55 as a base material using an arc ion plating apparatus. Regarding the test samples, the comparative samples, and the reference samples, a cutting test was 22 performed under the same cutting conditions as those of the above verification test 1 to measure the width of flank wear of the tool. 23 [0053] As shown in Tables 5 and 6, it was verified that the peeling resistance and chipping resistance of the base material 11 or the top layer 13 can be improved by using the surface-coating material obtained by providing the top layer on the surface of the metal nitride, in which the top layer is formed by alternately laminating one or more A layers containing a nitride (N) of aluminum (Al), chromium (Cr) , and silicon (Si) and one or more B layers containing a nitride (N) of aluminum (Al), chromium (Cr), silicon (Si) and yttrium (Y) . As a result, superior wear resistance in a high-temperature range which is an intrinsic characteristic of the top layer 13 can be sufficiently exhibited, the top layer 13 being a composite nitride containing aluminum (Al), chromium (Cr), silicon (Si), and yttrium (Y) as major components. Industrial Applicability [0054] The surface-coating material, the cutting tool in which the material is used, and the working machine in which the material is used according to the present invention can exhibit high peeling resistance and high chipping resistance. Therefore, superior wear resistance in a high-temperature range which is an intrinsic characteristic of the top layer can be sufficiently 26 exhibited. Accordingly, the present invention has extremely high industrial applicability. Reference Signs List [0055] 10: SURFACE-COATING MATERIAL 11: BASE MATERIAL 12: BOTTOM LAYER 13: TOP LAYER 14: A LAYER 15: B LAYER I/We claim: [Claim 1] A surface-coating material including a top layer on a surface of the surface-coating material, wherein in the top layer, one or more A layers, which contain a nitride of aluminum, chromium, and silicon and one or more B layers, which contain a nitride of aluminum, chromium, and yttrium, are alternately laminated, and the top layer is provided on a surface of a metal nitride. [Claim 2] The surface-coating material according to claim 1, wherein the A layer satisfies 0.15

Documents

Application Documents

# Name Date
1 3710-delnp-2015-English Translation-(15-05-2015).pdf 2015-05-15
2 3710-delnp-2015-Correspondence Others-(15-05-2015).pdf 2015-05-15
3 3710-DELNP-2015.pdf 2015-05-20
4 PD016125IN-NP SPEC FOR FILING.pdf 2015-05-21
5 PD016125IN-NP GPOA.pdf 2015-05-21
6 PD016125IN-NP FORM 5.pdf 2015-05-21
7 PD016125IN-NP FORM 3.pdf 2015-05-21
8 PD016125IN-NP FIGURES FOR FILING.pdf 2015-05-21
9 3710-delnp-2015-Form-1-(30-07-2015).pdf 2015-07-30
10 3710-delnp-2015-Correspodence Others-(30-07-2015).pdf 2015-07-30
11 3710-delnp-2015-Form-3-(16-10-2015).pdf 2015-10-16
12 3710-delnp-2015-Correspondence Others-(16-10-2015).pdf 2015-10-16
13 Power of Attorney [20-04-2016(online)].pdf 2016-04-20
14 Form 6 [20-04-2016(online)].pdf 2016-04-20
15 Assignment [20-04-2016(online)].pdf 2016-04-20
16 3710-delnp-2015-GPA-(27-04-2016).pdf 2016-04-27
17 3710-delnp-2015-Correspondence Others-(27-04-2016).pdf 2016-04-27
18 3710-delnp-2015-Assignment-(27-04-2016).pdf 2016-04-27
19 3710-DELNP-2015-FER.pdf 2019-04-12
20 3710-DELNP-2015-FORM 3 [06-06-2019(online)].pdf 2019-06-06
21 3710-DELNP-2015-Information under section 8(2) (MANDATORY) [01-08-2019(online)].pdf 2019-08-01
22 3710-DELNP-2015-OTHERS [02-08-2019(online)].pdf 2019-08-02
23 3710-DELNP-2015-FER_SER_REPLY [02-08-2019(online)].pdf 2019-08-02
24 3710-DELNP-2015-DRAWING [02-08-2019(online)].pdf 2019-08-02
25 3710-DELNP-2015-CLAIMS [02-08-2019(online)].pdf 2019-08-02
26 3710-DELNP-2015-PatentCertificate11-11-2022.pdf 2022-11-11
27 3710-DELNP-2015-IntimationOfGrant11-11-2022.pdf 2022-11-11

Search Strategy

1 3710DELNP2015_25-07-2018.pdf

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